TOTOLINK X5000R OS Command Injection Vulnerability in WiFi Schedule Configuration

An OS command injection vulnerability has been identified in the TOTOLINK X5000R router, specifically in firmware version V9.1.0cu.2350_B20230313. The vulnerability arises in the 'setWiFiScheduleCfg' function within the '/web/cgi-bin/cstecgi.cgi' file. Authenticated attackers can exploit this issue by sending crafted requests that include malicious commands, which are then executed on the operating system.

Impact

Exploitation of this vulnerability allows authenticated attackers to execute arbitrary commands on the device's operating system.

Reproduction

To reproduce this vulnerability, send a POST request to '/cgi-bin/cstecgi.cgi' with the 'eHour' parameter (along with other schedule-related parameters) containing a malicious payload. The injected command will be executed on the device, demonstrating the OS command injection flaw.